There are more than 40 kinds of metal welding methods, which are mainly divided into three categories: welding, pressure welding and brazing. Fusion welding is in the welding process of the workpiece interface heating to the melting state, no pressure to complete the welding method. When welding, the heat source will rapidly heat the interface [...]
With the increasing competition in PCB industry, quality management is becoming the focus of PCB factory management. To do a good job in FPC flexible circuit board production process quality management and control is the fundamental to eliminate the source of manufacturing defects. "Quality is dry out, not check out" this is often called circuit [...]
Method 1: 1. Cut the copper clad plate into the size required by the circuit diagram. 2. Put the wax paper on the steel plate, use a pen to carve the circuit diagram on the wax paper according to 1:1, and cut the circuit diagram on the wax paper according to the circuit board size, [...]
In the drilling process of PCB board, the hole size is not allowed, and how to deal with the distortion. Improper feeding speed or rotating speed; Excessive wear of the drill bit; Too many times of regrinding of drill tip or the length of chip removal groove is lower than the standard; Excessive deflection of [...]
PCB is just like the skeleton and nervous system of electronic circuit, which plays an important role in the electronic engineering project. When I was in college, I was particularly interested in circuit board design and hardware circuit design, and I studied them carefully. I thought it would be great to get a job sitting [...]
Two, two business models shine: large - volume board market win in the scale, small - volume board gross margin win (I) according to different requirements of downstream customers, PCB is divided into template and batch board According to the different requirements of downstream customers, PCB is divided into template and batch board. According to [...]
I. definition of inductance Inductance: a physical quantity used to measure the electromagnetic induction capacity of a coil. When a current is fed into a coil, a magnetic field is generated around the coil, and the coil has a magnetic flux passing through it. The greater the power supply through the coil, the stronger the [...]
Integrated circuit in all kinds of circuits are used, integrated circuit pin density, not easy to disassemble welding, as a general maintenance master or electronic technology practitioners, how to welding integrated circuit, and we talk about the following. Method/procedure 1. Dual in-line integrated circuit, two soldering irons can be used, and tin can be added [...]
The advantage of the innocuous treatment technology of the circuit board recycling equipment is that the epoxy resin is recovered, which not only avoids the pollution caused by the burning of organic matter, but also comprehensively recovers the epoxy resin. Circuit boards are the basic materials of electronic appliances, and China has become a major [...]
Circuit board manufacturing belongs to modern electronic industry. Circuit board also known as: PCB board, aluminum substrate, high frequency board, PCB board, PCB, circuit board, printed circuit board, kunshan circuit board, kunshan circuit board, flexible board, flexible board and so on. Circuit board also known as: PCB board, aluminum substrate, high frequency board, PCB board, [...]